UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM SD
Specialized Disclosure Report
MUELLER INDUSTRIES, INC.
(Exact name of registrant as specified in its charter)
Delaware | 1-6770 | 25-0790410 | ||||||
| (State or other | (Commission File | (IRS Employer | ||||||
| jurisdiction of | Number) | Identification No.) | ||||||
| incorporation) | ||||||||
| 150 Schilling Boulevard, Suite 100 Collierville, TN | 38017 | ||||
| (Address of principal executive offices) | (Zip Code) | ||||
Christopher J. Miritello (901) 753-3200 | ||
| (Name and telephone number, including area code, of the person to contact in connection with this report.) | ||
Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:
| ☒ | Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025. | ||||
| Section 1 - Conflict Minerals Disclosure | ||
| Item 1.01 | Conflict Minerals Disclosure and Report | ||||
A copy of the Registrant's Conflict Minerals Disclosure is filed as Exhibit 1.01 hereto and is publicly available at the Company's website at www.muellerindustries.com, select Investors, and then select SEC filings.
| Item 1.02 | Exhibit | ||||
Conflict Minerals Report required by Item 1.01 is filed as Exhibit 1.01 hereto.
| Section 2 - Resource Extraction Issuer Disclosure | ||
| Item 2.01 | Resource Extraction Issuer Disclosure and Report | ||||
Not applicable.
| Section 3 - Exhibits | ||
| Item 3.01 | Exhibits | ||||
The following exhibit is filed as part of this report:
Exhibit 1.01 - Conflict Minerals Disclosure as required by Items 1.01 and 1.02 of this form.
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the duly authorized undersigned.
| MUELLER INDUSTRIES, INC. | ||||||||
| By: | /s/ CHRISTOPHER J. MIRITELLO | Date: May 28, 2026 | ||||||
| Name: | Christopher J. Miritello | |||||||
| Title: | Executive Vice President, General Counsel and Secretary | |||||||
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Exhibit Index
| Exhibit No. | Description | ||||
| 1.01 | |||||
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